Electric alarm for incubators.



C. L. KULP. v

ELECTRIC ALARM POR mcUBAToRs. APPLICATION FILED MAR.3,1909.

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C. L. KULP.

ELECTRIC ALARM PoR INGUBATORS.

APPLICATION FILED MAR. 3.1909.

936,914. Patented 00t.12,1909.

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UNITED STATES. rAirENT OFFICE.

L. KULP, OF SUNBURY, PENNSYLVAIA, AS'SlGNOR 0F TQ DAVID HOWERTER, F SUNBURY, PENNSYLVANL C l ELECTRIC ALARM ron INCUBA'rons,

Specification of Letters Patent.

Application med much B, 1309- erzlal Ho- @1,1582- To 'all 'whom it concern: I

Be it known that I, CHARLES L. KULP, a citizen of the United States, residing at Sunbury, in the county of Northumberland and State of Pennsylvania, have invented certain new and useful improvements in Electric Alarms for lncubators, of which the following is a specification.

My viunvention relates to an improved electric alarm for incubators, which may be readily attached to any of the well known forms of incubators, and the damper adjusting lever will operate to close an electric cir.-

cuit and sound an alarm, when the lever is elevated by any suitable thermostatic controlling means within the incubator, when the temperature of the latter reaches the danger point, thus notifying the owner and preventing possibility of destroying the hatch by overheating.

A further object 1s to provide improved circuit closing means, which will be extremely simple in construction, cheap to manufacture, easy to apply to any ordinary incubator, and which will most eectually operate to close an electric circuit and sound an L.larm, when the damper controlling lever moves upward to a predetermined height.

With these and other objects in view, the invention consists in certain novel features of construction, and combinations, and arrangements of parts as will be more fully f hereinafter described and pointed out in the claims.

In the accompanying drawings, Figure l,

-is a top plan view illustrating my improvements. Fig. 2, is a view in side elevation. Fig. 3, is a fragmentary view in cross section. Fig. 4, is an enlarged view in side elevation of my improved circuit closing means, and Fig. 5, is a top plan View of Fig. 4.

1 represents an ordinary incubator, 2 the burner or heater for the same, and 3 the damper operating lever connected by a rod 4 with any desired formv of thermostat not shown, so that the lever will be moved by the thermostat in accordance with the temperature within the incubator.

My improved attachment is secured on top of the incubator, and comprises a vertical standard 5, having a base 6 secured to the top of the incubator by means of screws 7.

ard 5, and a set screw 9 to adjust the block 8 on the standard in accordance with the height of the lever 3. In this block 8, two binding posts 10 and 11 respectively are mounted, and project through the blockand are connected l'in an electric circuit with a battery 12 and bell l?? as shown in Fig. 1. These binding posts i0 and 11 extend through the blo-ck, and a trip arm 14 is pivotally mounted on the binding post '10, and is normally out of engagement with a contact block 15 on the other binding post l1. The long end of the trip arm 14 entends across and is supported upon the lever 3, so that the upward movement of lever 3 will move the short end of the trip arm 14 toward the contact block 15, and when the lever moves high enough, the trip arm will engage contact 15 and close the electric circuit and sound an alarm. o

The trip arm is preferably liattened at its shorter end as shown, but ll do not limit myself to the exact shape of this arm, as it may be made in various ways.

It will thus be observed that my improvements can be placed upon any ordinary incubator, and is not limitedl to the particular Should lower than that illustrated, the block 8 can be adjusted on thestandard 5, so as to properly position the trip arm 14 to sound the alarm when the temperature reaches a danger point.

Various slight changes might be made in the general form and arrangement of parts described 'without departing from my invention, and hence I do not restrict myself "to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall4 within the spirit and scope of the claims. v

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

l. In a device of thecharacter described, the combination with a standard adapted to be secured upon an incubator, a block of insulating material, means for adjustably securing said block on said standard, binding posts in said block spaced apart, a battery and an alarm in electric circuit with said binding posts, a contact block on one binding post, acontac*I trip arm pivoted between its ends on the other post, having one end adapted to be moved into contact with said contact block, and a damper operating lever for an incubator located below the other end of said trip arm, and adapted when elevated to move said trip arm into contact with said contact blockv and close the electric circuit between said binding posts, battery and alarm.

2. In a device of the character described, the combination with a standard, a base on said standard adapted to be secured upon the top of an incubator, a block of insulating material having an opening to receive said standard, a set screw in said block engaging the standard, and adapted to secure the block at various vertical adjustments, two binding posts extending through the block, a battery and an alarm in electric circuit with said binding posts, a Contact block on one post, a trip arm pivoted betweeny its ends on the other pest, and having one end movable in the path of said contact block, a vertically movable damper operating lever, and the other end of said trip arm positioned above said lever, so that when said lever moves upwardly the trip arm will be moved, so that it will close the electric circuit between the binding posts and sound an alarm.

3. In combination with an incubator, a vertically movable damper controlling lever on said incubator, a standard secured on the top of the incubator, a vertically adjustable block of insulating material on said standard, a Contact block, a trip arm ivotally su ported on said first mentioned b ock, and a attery and alarm in an electric circuit with said trip arm and contact block, and said trip arm located in the path of movevment of sald damper controllin lever and said contact block located in t e path of movement of one end of the trip arm, so that when the latter moves in one direction, it will move the trip arm into engagement with the contact block and close the electric circuit to sound an alarm.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES L. KULP.

Witnesses GEO. W. DEIBLER,

JOHN ZIMMERMAN. 

